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Researcher Profile

Dr. Dipl.-Inform. Christoph Striecks

Dr. Dipl.-Inform. Christoph Striecks

Function

Scientist

Center

Digital Safety & Security

Competence Unit

Security & Communication Technologies

Address

Giefinggasse 4, 1210 Vienna

Career

Field: Cyber Security

Main Research: Cryptography

Experience: My professional focus lies in the area of privacy-enhancing cryptographic technologies (such as end-to-end encryption, secure selective data sharing and computation on data, and authentication) with applications to concrete real-world problems (such as Big Data, Cloud, and IoT). In 2015, I received my PhD (Dr. rer. nat.) in cryptography from the Karlsruhe Institute of Technology (KIT) in Germany under the supervision of Prof. Dennis Hofheinz and second doctoral thesis appraiser Prof. Eike Kiltz on scalable identity-based encryption, short digital signatures, and modular revocation schemes. Larger-scale teaching activities included Algorithms I (lab, SS 2015) and IT security (lab, SS 2013), encompassed by several smaller-scale seminars and labs on the topic of cryptography. In 2010, I received my Diploma in computer science from the Technical University of Braunschweig in Germany with a major in cryptography and software engineering. From March to September 2008, I worked as a software-development intern for Siemens USA in Princeton, New Jersey. More recently, I was involved in the standardization process of ETSI STF 529 within ETSI TC CYBER (on Attribute-Based Encryption for access control and data privacy). Furthermore, I was part of the ENISA List of Experts for field B: ICT Security Standardisation and Certification in category 1) Applied Cryptography (Algorithms, Protocols, Standards). Moreover, I am a member of the International Association for Cryptologic Research (IACR).

  • 2010-2015: PhD Student
    Karlsruhe Institute of Technology (KIT), Karlsruhe / Germany
  • 2015-2015: Postdoctoral Researcher
    Karlsruhe Institute of Technology (KIT) / Germany
  • 2008-2008: Software-Development Intern
    Siemens / USA
  • 2017-2018: Member of ETSI STF 529
  • 2017-2020: Member of ISO SC27/WG2
  • 2011-: Member of International Association for Cryptologic Research (IACR)

Publications

  • Confined Guessing: New Signatures from Standard Assumptions
    Author(s): Florian Böhl, Dennis Hofheinz, Tibor Jager, Jessica Koch, and Christoph Striecks
    Journal: Journal of Cryptology (2015)
  • Practical Signatures from Standard Assumptions
    Author(s): Florian Böhl, Dennis Hofheinz, Tibor Jager, Jessica Koch, Jae Hong Seo, and Christoph Striecks
    Conference EUROCRYPT 2013, Athens, Greece
  • Programmable Hash Functions in the Multilinear Setting
    Author(s): Eduarda S.V. Freire, Dennis Hofheinz, Kenneth G. Paterson, and Christoph Striecks
    Conference CRYPTO 2013, Santa Barbara, USA
  • A generic view on trace-and-revoke broadcast encryption schemes
    Author(s): Dennis Hofheinz and Christoph Striecks
    Conference CT-RSA 2014, San Francisco, USA
  • Identity-based encryption with (almost) tight security in the multi-instance, multi-ciphertext setting
    Author(s): Dennis Hofheinz, Jessica Koch, and Christoph Striecks
    Conference PKC 2015, Gaithersburg, USA
  • On Cryptographic Building Blocks and Transformations
    Author(s): Christoph Striecks
    Conference PhD thesis, Karlsruhe Institute of Technology, Germany
  • Opportunities and Challenges of CREDENTIAL - Towards a Metadata-Privacy Respecting Identity Provider
    Author(s): Farzaneh Karegar, Christoph Striecks, Stephan Krenn, Felix Hörandner, Thomas Lorünser, Simone Fischer-Hübner
    Conference Privacy and Identity Management 2016, Karlstad, Sweden
  • Batch-verifiable secret sharing with unconditional privacy
    Author(s): Stephan Krenn, Thomas Lorünser, Christoph Striecks
    Conference ICISSP 2017, Porto, Portugal
  • Towards Attribute-Based Credentials in the Cloud
    Author(s): Stephan Krenn, Thomas Lorünser, Anja Salzer, Christoph Striecks
    Conference CANS 2017, Hong Kong, China
  • Revisiting Proxy Re-Encryption: Forward Secrecy, Improved Security, and Applications
    Author(s): David Derler, Stephan Krenn, Thomas Lorünser, Sebastian Ramacher, Daniel Slamanig, Christoph Striecks
    Conference PKC 2018, Rio de Janeiro, Brasil
  • Bloom Filter Encryption and Applications to Efficient Forward-Secret Key Exchange
    Author(s): David Derler, Tibor Jager, Daniel Slamanig, Christoph Striecks
    Conference EUROCRYPT 2018, Tel Aviv, Israel
  • Fine-Grained and Controlled Rewriting in Blockchains: Chameleon-Hashing Gone Attribute-Based
    Author(s): David Derler, Kai Samelin, Daniel Slamanig, Christoph Striecks
    Conference NDSS 2019, San Diego, USA
  • Collecting and Classifying Security and Privacy Design Patterns for Connected Vehicles: SECREDAS Approach
    Author(s): Nadja Marko, Alexandr Vasenev, Christoph Striecks
    Conference Computer Safety, Reliability, and Security. SAFECOMP 2020 Workshops – DECSoS 2020, DepDevOps 2020, USDAI 2020, and WAISE 2020, Lisbon, Portugal
  • Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection
    Author(s): Jan Bobolz, Fabian Eidens, Stephan Krenn, Daniel Slamanig, Christoph Striecks
    Conference ASIA CCS ’20: The 15th ACM Asia Conference on Computer and Communications Security, Taipei, Taiwan
  • CCA-Secure (Puncturable) KEMs from Encryption with Non-Negligible Decryption Errors
    Author(s): Valerio Cini, Sebastian Ramacher, Daniel Slamanig, Christoph Striecks
    Conference Advances in Cryptology - ASIACRYPT 2020 - 26th International Conference on the Theory and Application of Cryptology and Information Security, Daejeon, South Korea
  • Fine-Grained Forward Secrecy: Allow-List/Deny-List Encryption and Applications
    Author(s): David Derler, Sebastian Ramacher, Daniel Slamanig, Christoph Striecks
    Conference Financial Cryptography and Data Security, Virtual
  • Updatable Signatures and Message Authentication Codes
    Author(s): Valerio Cini, Sebastian Ramacher, Daniel Slamanig, Christoph Striecks, Erkan Tairi
    Conference nternational Conference on Practice and Theory of Public-Key Cryptography (PKC) 2021
  • Bloom Filter Encryption and Applications to Efficient Forward-Secret 0-RTT Key Exchange
    Author(s): David Derler, Kai Gellert, Tibor Jager, Daniel Slamanig, Christoph Striecks
    Conference Journal of Cryptology, Volume 34, Article 13
  • Fine-Grained Forward Secrecy: Allow-List/Deny-List Encryption and Applications
    Author(s): David Derler, Sebastian Ramacher, Daniel Slamanig, Christoph Striecks
    Conference Financial Cryptography and Data Security 2021, Virtual
  • Guideline for Architectural Safety, Security and Privacy Implementations Using Design Patterns: SECREDAS Approach
    Author(s): Nadja Marko, Joaquim Maria Castella Triginer, Christoph Striecks,Tobias Braun, Reinhard Schwarz, Stefan Marksteiner, Alexandr Vasenev, Joerg Kemmerich, Hayk Hamazaryan, Lijun Shan, Claire Loiseaux.
    Conference Computer Safety, Reliability, and Security. SAFECOMP Workshops – DECSoS 2021, Virtual
  • Versatile and Sustainable Timed-Release Encryption and Sequential Time-Lock Puzzles
    Author(s): Peter Chvojka, Tibor Jager, Daniel Slamanig, Christoph Striecks
    Conference European Symposium on Research in Computer Security (ESORICS)
  • Logarithmic-Size (Linkable) Threshold Ring Signatures in the Plain Model
    Author(s): Abida Haque, Stephan Krenn, Daniel Slamanig, Christoph Striecks
    Conference International Conference on Practice and Theory of Public-Key Cryptography (PKC), Virtual
  • Algorithms I (Tutorial) (2016)
    Karlsruhe Institute of Technology (KIT)
  • IT Security (Tutorial) (2013)
    Karlsruhe Institute of Technology (KIT)
  • Advanced (Public-Key) Encryption (invited single lecture) (2019)
    TU Wien
  • Advanced (Public-Key) Encryption (invited single lecture) (2020)
    TU Wien
  • Redactable Blockchains (invited single lecture) (2021)
    TU Wien
  • Cloud basierte Authentifizierung
    Inventor: Stephan Krenn, Thomas Lorünser, Christoph Striecks
    Submission Date: 09.11.2016
    Issue Date: 09.11.2016

Further Information

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